Journal of Kryvyi Rih National University

Abstract

Purpose. The experimental development of the armor lining design of the fine crusher which forms the crusher chamber and its impact on process parameters. Research methods. Generally accepted methods of crushing theory, variational calculus, statistical processing of experimental and theoretical studies, extensive laboratory experiments using modern methods and measuring instruments have been used. To conduct the experiment, the second-order rotatable design followed by computer-based result processing has been applied. Scientific novelty. The study on the methods and means of increasing the effectiveness of cone crusher performance is based on the fairly full consideration of the involved factors and results in the necessity to examine the complex set of causes. Experimental studies have been carried out. They include determining the influence of crushing chamber profile, rock hardness, the size of the crusher opening on the productive capacity, and product quality. The mathematical model in the form of regression equation obtained by statistical methods on the basis of experiments and during the experiments has been defined. To solve the set goals the method of the second-order rotatable design was used. It allows not only obtaining the mathematical model of the process but carrying out the statistical assessment of the results as well. When planning the experiments the crushing chamber volume, the hardness of the crushed ore, the size of the crusher opening, the length of the calibration area are taken as variable factors. Practical significance. Experimental studies have been conducted on the fine cone crusher model (M 1 : 5) to define the impact of crasher chamber profile under different values of the crusher opening, processing ore with a different hardness on crusher capacity, and finished product output. Results. It has been determined the optimal values of crushing chamber volume, the size of the crusher opening, the length of the calibration area under the different design, and mechanical parameters of the fine cone crusher model with different crushing chamber profiles

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Retrieved from Vol. 19, No. 1, 2021

Pages 82–85